Peter Warshall lectures on water. Warshall narrates the scientific story of the origin of water on Earth, in four stages. He then describes the molecular structure of water and how it illustrates love: covalent bonds illustrate the strong bond of equal sharing; ionic bonds illustrate the weaker bond of relatedness and openness; and surface tension illustrates the principles of resiliency and light touch, receptivity and boundaries. Warshall concludes with a discussion of "The water contract" and ecological interdependence. In the question and answer session, he discusses water purity and the effects of mineral content on the behavior of water.